package com.demo.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author :chenjie
 * @date :Created 2022/11/3 18:07
 */
@Service
public class PaymentService {
    /**
     * 正常访问
     * @param id
     * @return
     */
    public String paymentInfo_OK(Integer id){
        return "线程池 ："+Thread.currentThread().getName()+"PaymentInfo_OK,id:  "+id+"\t"+"O(∩_∩)O哈哈~";
    }

    /**
     * 超时错误
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_TimeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")//触发条件底线
    })
    public String paymentInfo_TimeOut(Integer id){
        int time=5;
        try{
            TimeUnit.SECONDS.sleep(time);
        }catch (InterruptedException e){
            e.printStackTrace();
        }
        return "线程池 ："+Thread.currentThread().getName()+"PaymentInfo_TimeOut,id:  "+id+"\t"+"O(∩_∩)O哈哈~"+"耗时"+time+"秒";
    }
    public String paymentInfo_TimeOutHandler(Integer id){
        return "线程池 ："+Thread.currentThread().getName()+"paymentInfo_TimeOutHandler,id:  "+id+"\t"+"O(T_T)O哈哈~";
    }

    //服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期等待时间
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id<0){
            throw new RuntimeException("*********id 不为负数");
        }
        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName()+"\t"+"调用成功，流水号:  "+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能为负数，请稍后再试      id:"+id;
    }
}
